<template>
	<view class="my-settle-container" v-if="cart.length!==0">
		<!-- 全选区域 -->
      <label class="radio" @click="changeAllState">
        <radio :checked="true" color="#C00000" :checked="isFullCheck"/><text>全选</text>
      </label>
 
      <!-- 合计区域 -->
      <view class="amount-box">
        合计: <text class="amount">￥{{checkedGoodsAmount}}</text>
      </view>
      
      <!-- 结算按钮 -->
      <view class="btn-settle">
        结算({{checkedCount}})
      </view>
	</view>
  
  <!-- 空白购物车区域 -->
  
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如约~,快去买买</text>
  </view>
</template>

<script>
  import {mapGetters,mapMutations} from 'vuex'
	export default {
		data() {
			return {
				
			};
		},
    
    computed:{
      // 将total隐射当前组件中
      ...mapGetters('m_cart',['total','checkedCount','checkedGoodsAmount']),
      // 是否全选
      isFullCheck(){
        return this.total===this.checkedCount
      }
    },
    
    methods:{
        // 使用 mapMutations 辅助函数，把 m_cart 模块提供的 updateAllGoodsState 方法映射到当前组件中使用
      ...mapMutations('m_cart',['updateAllGoodsState']),
      // label 的点击事件处理函数
      changeAllState(){
      // 修改购物车中所有商品选中状态
        this.updateAllGoodsState(!this.isFullCheck)
      }
    }
	}
</script>

<style lang="scss">
.my-settle-container{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50px;
  background-color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-left: 5px;
  font-size: 14px;
  .radio{
    display: flex;
    align-items: center;
  }
  .amount{
    color: #C00000;
  }
  .btn-settle{
    height: 50px;
    min-width: 100px;
    background-color: #C00000;
    color: white;
    line-height: 50px;
    text-align: center;
    padding: 0 10px;
  }
}

.empty-cart{
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  .empty-img{
    width: 90px;
    height: 90px;
  }
  .tip-text{
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
  
}
</style>
